Additional Financial Information - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	9 Months Ended
	Feb. 25, 2024	Feb. 26, 2023	Jun. 14, 2023	May 28, 2023
Cash Paid for Interest and Income Taxes [Abstract]
Interest, net of amounts capitalized	$ 97.6	$ 64.3
Income taxes, net of refunds	86.6	(29.5)
Noncash Investing and Financing Items [Abstract]
Increase in land, buildings and equipment through accrued purchases	44.8	82.1
Right-of-use assets obtained in exchange for new operating lease liabilities	333.2	131.5
Right-of-use assets obtained in exchange for new finance lease liabilities	70.2	41.5
Net change in right-of-use assets mainly due to lease modifications resulting in reclassification of leases from operating to finance	23.2	53.1
Restricted cash	24.2	$ 59.6		$ 48.4
Ruth’s Chris
Noncash Investing and Financing Items [Abstract]
Operating lease right-of-use assets	$ 301.6		$ 291.6